package main

import "fmt"

func tiaoJian(a, b string) (string, string, string) {
	switch a  {
		case "go": fmt.Println(a)
		case "java": fmt.Println(a)
		default: fmt.Println("nothing")
	}

	if (a != b) {
		return a,"!=",b
	}
	return b, "=", a
}